feat: ✨ Add conda environment setup scripts for fish and zsh shells

tools/conda_env.fish

@@ -0,0 +1,22 @@
+#!/usr/bin/env fish
+
+set ENV_NAME $argv[1]
+set PACKAGE_NAME $argv[2]
+set PYTHON_VERSION $argv[3]
+
+if test -z "$PYTHON_VERSION"
+    set PYTHON_VERSION 3.11
+end
+
+conda create -n $ENV_NAME python=$PYTHON_VERSION --no-default-packages -y
+conda activate $ENV_NAME
+conda config --add channels conda-forge
+conda config --set channel_priority strict
+conda install mamba -y
+
+# Install spectrafit-all package
+mamba install spectrafit-all -y
+# Install an dditional package if provided
+if test -n "$PACKAGE_NAME"
+    mamba install $PACKAGE_NAME -y
+end

tools/conda_env.zsh

@@ -0,0 +1,18 @@
+#!/usr/bin/env zsh
+
+ENV_NAME=$1
+PACKAGE_NAME=$2
+PYTHON_VERSION=${3:-3.11}
+
+conda create -n $ENV_NAME python=$PYTHON_VERSION --no-default-packages
+conda activate $ENV_NAME
+conda config --add channels conda-forge
+conda config --set channel_priority strict
+conda install mamba -y
+
+# Install spectrafit-all package
+mamba install spectrafit-all -y
+# Install an dditional package if provided
+if [[ -n $PACKAGE_NAME ]]; then
+    mamba install $PACKAGE_NAME -y
+fi